I think we should use this technology because it say in the article that "a classroom computer cand recognize when a student when a student is becoming confused or bored". This technology could make the lesson easier, some people don't like to ask for help from teachers for certain reasons, with this new technology you won't have to and it will make life so much easier.

They use video imagery the software tracks the facial movements. The painted face of mona lisa by tweaking diffrent units the computer can identify mixed emotions. every expression is compared against a face, The demonstration could bring a smile to your face, for example. If you smile when a AD appears on your screen the computer will bring up another AD that is similar to the AD your looking at right now. But if you frown the next AD won't be the same. According to the facial feedback using your facial mucsles doesn't only express human emotion they also help produce them.